Packing



Aug. 18, 1925. 1,550,322

J. OSTRANDER PACKING Filed Nov. 8, 1919,

Jizw 020 Patented Aug. 18, 1925.

; UNITED STATES PATENT OFFICE.

JAMES OSTRANDER, F INDIANAPOLIS, INDIANA, ASSIGNOR TO GRAPHIC-METALPACKING COMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATION.

PACKING.

Application filed November 8, 1919. Serial No. 336,682.

To all whom it may concern.

Be it known that I, JAMES OSTRANDER, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented new and useful Improvements in Packings, of which thefollowing is a full, clear, concise, and exact description, referencebeing had to the accompanying drawing, forming a part of thisspecification.

My invention relates toimprovements in packing, and has for its objectthe production of a packing that willxstand rou 'h usage and wear betterthanordinary pac ing now on the market.

A further object is the roduction of a packing by the use of whic a thinfilm of lubricant may be formed on the shaft.

A further object is the production of a packing in which the abovefeatures are combined with the advantage of cross expansion tending tokeep the packing in place against the shaft and cause it to perform itsfunction in the most efficient manner.

A further object is the production of a packing that can be cheaplymanufactured,

' and one that will remain in operative position with little liabilityof displacement.

0 These and such other objects as may hereinafter appear are attained bymy device, an embodiment of which is illustrated in the accompanyingdrawings, in which Figure 1 represents a section view of my improvedpacking before compression;

Fig. 2 represents a top plan View of Fig. 1, with a portion of the upperlayer broken away;

Fig. 3 represents a sectional view of my 40 improved packing aftercompression.

Like numerals of reference indicate like parts, in the several figuresof the drawings. y

Referring now to the drawings,-my in- 4 vention contemplates the use ofa packing formed from strips of canvas, duck, or some fabric or fibre 4,having interposed between the layers a composition 5 of some rubber orrubberlike substance mixed with some metallic, mineral, or mineral-likematerial.

T metals,

The fabric is ordinarily supplied in wide strips and the composition 5spread between to the desired degree of thickness, and the structurebuilt up to the required thickness, as indicated in Fig. 1.

The material is then cut into strips of varying widths, depending uponthe character of the packing required, and the strips so out are placedin a press and compressed, causing the layers to assume a wrinkled orcorrugated shape, as shown in Fig. 3 at 6. This construction brings inthe principle of cross-expansion, as the packing being con fined on theoutside and inside is always tending to expand and hugs more closely theshaft about which it is placed.

In practice with the ordinary rubber mixture, I use a grapho-metalcomposed in the main of soft metal in loculate condition with graphiteembedded in its pores as dcscribed in United States Patent No. 926,676issued to Septimus P. Morison. By the use of this composition I getexcellent results; and the shaft, after a short use, is coated with athin film of graphite, which acts as a lubricant and eliminates skinfriction.

A packing made in the above described manner wears much longer thanother packing on the market, and the presence of the metal ormineral-like material greatly increases the efliciency of the product.

I can, if I desire, use lead without gra hite, or graphite without lead,and I also nd that the use of other comparatively soft either alone orin combination with 6 graphite, will also increase the value of theproduct, whether the layers are compressed or corrugated, or not.

The value of packing of this character ,depends greatly on its abilityto maintain its shape and serve in addition to the packing, 'as alubricant, and this result is attained with a high degree of efliciencyin my product.

I claim as new and desire to secure by Letters Patent of the UnitedStates 1. A packing formed from a multiplicity of layers of fabric, witha layer composed of a mixture of rubber and metal interposed betweensaid layers, said metal being in locuiate condition with graphiteembedded of fabric and a rubber-iike composition coliin its pores.taining lead in loculate condition with 2. A packing formed fromalternate 1ay= graphite embedded in its pores. 10 ers of fabric and arubber-like composition In witness whereof, I have hereunto sub- 5includin a lubricant, said fabric being scribed my name.

Wrinkle by the application of pressure.

3. A packing composed of alternate layers JAMES OSTRAN'DER.

